This section used to be called "Unanswered Questions" and I realize that it may be something of a misnomer. Some of these questions do, indeed, have answers. Some don't just yet and some may never be answered but I think they are worth thinking about.
What is the deal with the creation myth? Do those names ring any bells at all?
What about the story of Markey Academy, the kids found with their throats cut, their blood drained and their hair turned white?
The story of David Quick sounds familiar but I can't quite place it (perhaps I've just seen "Road Warrior" a few too many times.)
Of course there is also the great turtle, wasn't that a significant part of beating the creature in "IT"? Some great mystical turtle?
At one point Roland says that as a rule time pieces don't work anymore. Would this be true for sun-dials as well?
Could the form of shared telepathy that they all seem to have be considered "the Shine"?
In Book 4 it is mentioned that Henry had a gang when he was a kid. The other members were Jimmie Polino, Tommy Fredericks, Georgie Pratt, and Frank Duganelli. They also knew other boys named Skipper Brannigan, Csaba Drabnik and Larry McCain. I don't know about the rest of these names, but Georgie Pratt sounds achingly familiar. I have since found out that "Georgie Pratt" is the name of a comic book artist who worked for both Marvel & D.C. over the years. Since I used to sell comic books that would explain why the name sounded familiar.
In Book 4, page 135 (hardcover ed.) there are three odd phrases: "the world next door", "sometimes they come back" and "get on your horse and ride". Aren't these the titles of short stories by King?